Ventilator



, (No Model.)

J. B. SLADE.

, VENTILATOR. No. 597,171. Patented Jan. 11,1898.

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WITNESSES INVENTOR 4% F/ 6" ATTMNEYJT UNITED STATES PATENT Fries,

JAMES BARTHOLOMEV SLADE, OF RIVER-HEAD, NEW YORK.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 597,171, dated January11, 1898.

Application filed June 1 1, 1 8 9 6.

T aZZ whom it may concern.-

Be it known that I, J AMES BAnrnoLoMnw SLADE, a citizen of the UnitedStates, and a resident of Riverhead, in the county of Suffolk and Stateof New York, have invented certain new and useful Improvements inVentilators, of which the following is a specification, reference beinghad to the accompanying drawing, forming a part thereof, in whichsimilar numerals of reference indicate corresponding parts.

This invention relates to ventilators; and the object thereof is toprovide an improved device of this class which may be employed for thepurpose of ventilating buildings, also for ventilating cars orrailway-carriages and for ventilating steamboats and other vessels.

The invention is fully disclosed in the following specification, ofwhich the accompanying drawing forms a part, said drawing being acentral vertical section of my improved ventilator and also of the roofor covering of a building, railway-carriage, or other structure.

In the drawing forming part of this specification I have shown at- 4 asection of the roof of a building, railway-carriage, steamer or othervessel, and in the practice of my invention I form a circular openingtherein, in which is mounted a tubular casing 5, which is provided witha flange 6 at its lower end, whereby it is firmly bolted to the roof 4.

The casing extends a predetermined dis tance above the roof, as shown at6, and within said casing and arranged concentrically thereof is atubular sleeve 7, which is sup ported therein by cross rods or bars 9,whereby air-passages or an annular chamber 10 is formed between saidsleeve and the tubular casing 5, or said sleeve and said tubular casing5 may be formed integrally, and the airpassages 10 may be boredtherethrough or otherwise formed therein.

Mounted in the sleeve 7and rigidlyseoured thereto is a tube 11, withinwhich and about the middle thereof is fixed a spider or frame 12, andmounted in the upper end of the tube 11 and revoluble therein is anair-ingress tube 13, which is provided with an outwardlycurvedbell-shaped end 14, and said tube 13 is also provided about midway ofits length Serial No. 695,18 7. (No model.)

with a spider or frame 15, and connected centrally with the spider orframe 15 is a vertical rod 16, which is pivotally supported cen trallyof the frame or spider 12 in the tube 11.

I also employ a hood 1'7,which is cylindrical in form and the lower endof which incloses the upper end of the tubular casing 5, and

and the tube 1'3 passes therethrough, and conof the hood 17 is anair-egress tube 18, which communicates with the interior of said hoodand which is curved outwardly in the direction opposite to that of thebell-shaped end of the tube 13, and said tubes 13 and 18 are preferablyconnected by a cross bar or bars 19, which give stability and strengththereto.

The outer end of the tube 18 is provided with a conical cap or hood 20,the apex of which is directed outwardly, and formed in the tube 18within said ,cap or hood and in line with the side walls thereof areports or openings 21, through which the air passes into said tube andout at the end thereof, and mounted on the end of said tube is a wing orvane 22.

As thus constructed it will be seen that the entire upper portion of theventilator, including the tubes 13 and 18 and the hood 17, is pivotallysupported by the rod 16, and said upper portion is free to revolve onits pivotal support, and, by reason of the hood 20, which is conical inform and the apex of which is directed outwardly, and the wing or vane22, the bell-shaped end of the tube 13 is always held in the directionfrom which the wind is blowing. The air thus enters the car,building,steamer, or other structure through the tube 13, and the air within saidbuilding, car, vessel, or other structure passes out through theair-passages 10 and through the tube 18, and, by reason of the conicalhood 20 and the air ports or openings 21, the outside air is collectedby said hood and passes through said ports or openings into said tubeand out at the end thereof, as clearly shown by the arrows, thus drawingthe air out through the tube 18 and through the hood 1'7 and theair-passages 10, while at the same time the air passes through the tubes13 and 11 to fill the vacuum thus formed, and by means of this devicethe the upper end of said hood is conical in form,-

nected with one side of the upper conical end building, car, or vesselis thoroughly ventilated at all times and provided with a constantsupply of fresh air.

My improved ventilator is simple in construction and operation, whilebeing perfectly adapted to accomplish the result for which it isintended; and it is evident that changes in and modifications of theconstruction herein described may be made without departing from thespirit of my invention or sacrificing its advantages.

Having fully described my invention, I claim as new and desire to secureby Letters Patent 7 The herein-described ventilator comprising thecombination with a roof having a circular opening therein of a tubularcasing provided at the lower end with a flange adapted to be bolted tosaid roof, and internally with a tubular sleeve supported by cross rodsor bars thereby forming air-passages between said sleeve and easing, atube mounted in said sleeve, said tube being provided internally with aspider or frame and at the upper end thereof with a revolubleingress-tube which is provided with a bell-shaped end, said ingress-tubebeing provided internally with a spider or frame which is providedcentrally with a vertical rod the lower end of which is pivotallysupported centrally of the frame or spider 12, said casing beingprovided with a hood which incloses the upper end thereof, the upper endof said hood being conical in form and having a central opening thereinthrough which said ingress-tube passes, an egress-tube connected withthe conical end of said hood, and communicating with the interiorthereof, said egress-tube being curved outwardly in a direction oppositeto the bellshaped end of said ingress-tube, and provided at the outerend thereof with means to keep the funnel directed toward the wind, andalso provided with means to help draw the air through the said tubes,substantially as herein shown and described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of the subscribing witnesses, this 30th day of May,1896.

JAMES BA RTHOLOMEW SLAI) E.

WVitnesses:

NAT. W. FosTER, WILLIS L. TERRY.

